No bump for specific categories

I’m aware of this plugin, but I want something different.

The idea is to prevent bumps in specific categories. Let’s say that you have an off-topic category in your forum, and you want to prevent users from bumping the topics in that category (when they create the topic and when others reply to it).

Is there any official or unofficial plugin for that?

Is muting the category for everyone by default an option to achive what you want?
Then these topic are not shown in latest.

I like your idea, but muting the category also hides it from the category list.

I want the category to remain visible so the users can know that it exists.